Milling-machine.



No. 898,353. PATENTED SEPT. 8, 190a.

L. GIANNELLI. MILLING MACHINE.

APPLICATION FILED MAE.20, 1908.

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' AiTORNEY.

, E JNVENTOR,

No. 898,353. PATENTED SEPT. s, 1908.

L. GIANNELLI. MILLING MACHINE.

APPLICATION FILED MAR.20,1908.

3 SHEETS-SHEET 2.

WIN/E9858 i To all whom it rrta'y concern:

LORENZO GIANNELLI, OF

r ATEnT oFFroE.

BOSTON, MASSACHUSETTS.

MILLING-MACHINE.

Application filed March 20, 1908. Serial No.-422,267.

Be it known that I, LORENZO GIANNELLI, a subject of the King of Italy, and resident of Boston, in the county of'Suffolk and State of Massachusetts, have invented an l[m rovemeat in Milling-Machines, of whicht e following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention is rirnarily intended for extremely heavy WOIH dressing marble. a

The main features of my invention, together with the constructional details, will e pointed out at length in the following description, reference being made to the accompanying drawings, in which I have shown one embodiment 'of the invention.

I In the drawings, Figure 1 is a plan view of the machine, artly broken away and parts omitted. for c earness of illustration; Fig. 2 shows the same in front elevation, one end being broken away to permit showing the same on a slightly enlarged scale Figs. 3 and 4 are front and edge elevations of one of the slide blocks; Fig. 5 is a fragmentary end elevation, looking at Fig. 2 from theleft; Fig. 6 is an enlarged side elevation of one end of the table su porting portion of the machine, showing t e lifting or height adjusting mechanism; Fig. 7 is a fragmentary view in front elevation of the last mentioned mechanism; Figs. 8 and 9 show in elevation and plan details of the shi ping mechanism; Figs. 10 and 11 Show in ront and side elevation portions of the adjustable brackets for supporting the driving mechanism Figs.- 12 and 13 show in front elevation and plan the remaining portions of the adjustable brackets; Figs. 14 and 15 Show respectively, in end and side elevation the head stock; Fig. 16 is a horizontal sectional View of the tool and mounting thereof over the head stock; Fig. 17 is a fragmentary view showing the arrangement of themain frame at the -centerof themachine; Fig. 18 is a broken lan view'of the bottom or lower table; Fig. 19 is a fragmentary inverted plan of one end of the upper table; Fig. 20 is a vertical cross section taken .on the line 1-2,

, Fig. 1; and Figs. 21 and 22 showin side and end elevation the rest to hold the work in place on the table.

The main frame of the machine is arranged in the shape of a cross, supported at two ends Specification of Letters Patent,

, Such particularly as Patented Sept. 8, 1908.

B, the former being bolted to the horizontal beams O by bolts D, and the latter to-the beams C by bolts E. In the upper ends of the legs or standards A are slide Ocks F and the ends of track bars G, which occu y recesses or guideways formed therefor 1n the standards A and are held unyieldin ly together by bolts H. Projecting ob iquely from the track bars G and extending lengthwise along the top thereof are tracks or guides I along which the lower table W takes its longitudinal motion. Blocks F are provided with flanges 1, 2 which overlap the adjacent sides of the standards A and serve to said blocks being further provided with opposite wings or extensions 3 agalnst which the track bars G are immovably bolted and are vertically movable in the standards A. For this urpose I provide in the standards A vertica screws J turning in the blocks F fast on which screws are beveled gears driven by gears P fast on a shaft 0, which is 'rovided also with a gear N driven by a Beveled pinion M on a shaft a operated by a hand wheel K and 'mounted in a bracket L, as best shown in Figs. 6 and 7. ;'Ihus by turnin the hand wheel K the vertloally movab e frame F G and the superposed parts can be raised and lowered in arallelism to themselves. stated, is arranged to move longitudinally on the frame F G, and on this lower table 18 an upper table or work support capable of being moved transversely of the table W 1 n slideways 'w. The table Z is provided. with usual longitudinal slots l to receive ordinary work-holding do s (not shown) such as are commonly used 1n this art, and in additlon bolted to the middle of the up er end of the table, and consists of an uprig t post 1*, s e Figs. 21 and 22, adapted to be secured in osition by bolts h. A face platef is bolted by bolts 1 to the post 1', being vertically adjustable in slots 1"; At the top'of the post 15 a crosshead '2' held in lace by bolts m passing through slots i or longitudinal movement, said crosshead being provided with a screw n at its outer end, Operated by a hand wheel n. The work is placed on the table I and is pushed against the plate 8 and then held down by the screw n. The work and upper table I which supports it are moved by-legs A and at its other two ends by legs thereto a rest is provided which can beguide the blocks F in their vertical motion,

the entire frame F, G and superposed parts The lower table V, as already laterally of the under table W by the engagement of pinions p with racks 9, see Figs. 18,

and 19, the inions 1) being driven by a shaft 0 having a gear 1) actuated by a crank 'm, see Fig. 1, on the end of its shaft t. The work is moved longitudinally by moving the under table W and all the su erposed parts, and for this purpose I rovide in the frame F, G a screw V whose eveled gear a is driven by a corresponding gear T on a shaft S provided with pulleys a, b, 0 adapted to be engaged by an open belt b and a cross belt 6 from a countershaft R, which in turn is driven from an overhead or any other driving belt (not shown). The head stock a, rests on the guides of the main frame C, see Fi 1, and is moved toward and from the work y a screw 1), preferably one at each end of the frame for handling two head stocks if desired, operated by cranks c.

' shown in detail in Figs. 14 and 15, where it will be seen that its lower end fits within the frame C and is slidingly secured by a late (1 bolted in lace, and at its upper en it carries a sha t f secured by journal caps g and driven by a pulley It, said shaft being provided with washers z" to take the end thrust, and at its projecting end is shown an emery wheel j secured by a nut is and washer m. The screws 6' are provided at their inner ends with holding nuts n". The driving belts b, b are shifted by a belt ship er (1 operated by cranks and levers X, Y, i pivoted to the frame of the machine in position to permit the shifting of the belt from the rear side, see Fig. 1. Adjacent the lever X I rovide also a crank e for operating a beveled pinion f to actuate the longitudinal feed or screw V when it is desired to actuate the same by hand. Split rings g, g" are provided, so that upon removal of one or the other, the gear T or the ear f, as the case may be, may be moved ack out of mesh with the adjacent bevel gear of the shaft V.

To compensate for the extreme upward movement or position of the tablesW, Z, I have specially mounted the belt shaft R so that it can be moved forward away from the adjacent portion of the frame C. To this end a bracket h is secured to the frame 0 by -'bolts D, said bracket having a projecting portion 72. slotted at h, and having serrations or notches k in its top edge. Fitting against the part k is a journal block '1'. which supports the adjacent end of the shaft R, being adj ustably bolted thereto by a bolt e" passing into the slot it, see Figs. 2, 10 and 11. The opposite end of the shaft R is similarly sup ported, see Figs. 2, 5, 12 and 13, exce ting that the serrations are rovided direct y on the frame 0 as shown at 5 Fig. 5, and a block j is correspondingly serrated at 7' and slotted at 7' to receive a bolt f The shaft S at the opposite ends of the driving belt is supeveled gear 0 meshing with a,

The head stock is 'sla s are sawed into the desired shape, whereupon grinding and polishing wheels are then substituted for the saw and the tiles are ground down quickly and with absolute uniformity. When working,a small stream of water should be permitted to run onto the tool, as j, to prevent undue heatin The process of dressing marble is usual y very slow and laborious, whereas by my machine it is greatly facilitated, the machine having a range of movements such that a considerable extent of surface may be treated, and the construction being such that there is no liability of the frame springing or chattering, or the arts getting out of order.

aving described my invention, what I claim as new and desire to secure by Letters Patent of the United States is,

1. In a machine of the kind described, a main frame C in the form of a cross, having its four projecting portions alined in oppositely extending airs, and each provided at its outer end wit a depending leg or standard, the standards ofone of said pairs having lon itudinal slots at their upper ends, a vertica 1y movable frame having longitudinally extending track bars at the sides thereof and transverse end blocks depending between and beyond said side track bars and fitting centrally the slots of said end supports, a table mounted on said vertically movable frame, and means engaging said blocks for extending track bars at the sides thereof and transverse end flanged blocks depending between and be 0nd said side track bars and fitting centra ly the slots of said end su ports, a table mounted on said vertical y movable frame, and means engaging said blocks for simultaneously and uniformly raising them and thereby raising said' table, the fian es of said blocks overlap ing the edges of t e guiding slots provided therefor and projecting laterally on the opposite sides of the standard.

3. In a machine of the kind described, a

main frame 0 in the form of a cross, having its four projecting portions alined in op ositely extending airs, and each provided at its outer end wit a depending leg or standard, the standards of one of said pairs having longitudinal slots at their upper ends, a vertically movable frame having longitudinally extending track bars at the sides thereof and transverse end blocks depending between and beyond said side track bars and fitting centrally the slots of said end supports, a table mounted on said vertically movable frame, and means engaging said blocks for simultaneously and uniformly raising them and thereby raising said 'table, said track bars having longitudinal tracks inclined ob li uely away from each other along the top e ges of the bars, and said table having correspondingly shaped grooves fitting said tracks for longitudinal movement thereon.

4. In a machine of the kind described, a

main frame C in the form of a cross, having its four projecting portions alined in oppositely extending airs, and each provided at its outer end wit a depending leg or standard, the standards of one of said pairs having longitudinal slots at their upper ends, a

vertically movable'frame having longitudinally extending track bars at the sides thereof and transverse end blocks depending between and beyond said side track'bars and fittin centrally the slots of said endsupports, a tabIe mounted on said vertically movable frame, means enga ing said blocks for simultaneously and uniformly raising them and thereby raising said table, said track bars having longitudinal tracks inclined obliquely away from each other along the top edges of the bars, and said table having corres 0ndingly shaped grooves fitting said trac s for lon itudinal movement thereon, and a top table mounted on said table and provided with means permittin it to move transversely of the under ta le.

5. In a machine of the kind described, a main frame C in the form of a cross, having its four projecting portions alined in oppositely extending pairs, and each provided at its outer end with a de ending leg or standard, a vertically movab le frame mounted on one of said alined pairs, a table mounted to move longitudinally on said vertically movable frame, means for simultaneously movin vertically the o posite ends of said movab e frame, means or moving said table longitudinally on its frame, a top work support carried by said table, means to move sald work support transversely of said table, tool carrying means mounted in the other of said alined pairs, and mechanism for moving said tool carrying means toward and from the work support.

6. In a machine of the kind described, a main frame C in the form of a cross, having its four projecting portions alined in oplpositely extending pairs, and each provide at its outer end wlth a de ending leg or standard, a vertically movab le frame mounted on one of said alined pairs, a table mounted to move longitudinally on said vertically movable frame, means for simultaneously movin vertically the opposite ends of said movable frame, power driven means for moving said table longitudinally on its frame, a top work support carried by said table, means to move said work support transversely of said table, tool carrying means mounted in the v other -of said alined airs, mechanism for moving said tool carrylng means toward and from the work support, a power shaft mounted on one of the portions of the main frame extending transversely to said movable frame, driving mechanism carried by said movable frame for engaging and driving said power driven means, and connections from said power shaft to said driving mechanism for driving the latter forward and for reversing the same.

7'. In a machine of the kind described, a main frame 0 in the form of a cross, having its four projecting portions alined in opipositely extending pairs, and each provide at its outer end with a de ending leg or stand ard, a vertically movab le frame mounted on one of said alined pairs, a table mounted to move longitudinally on said vertically movable frame, means for simultaneously movin vertically the opposite ends of said movable frame, power driven means for moving said table longitudinally on its frame, a top work support carried by said table, means to move said work support transversely of said table, tool carrying means mounted in'the other of said alined airs, mechanism for moving said tool carrymg means toward and from the work support, a power shaft mounted on one of the portions of the main frame extending transversely to said movable frame, driving mechanism carried by said movable frame for engaging and driving said power driven means, connections from said power shaft to said driving mechanism for driving the latter forward and for reversing the same, said power shaft being provided with supporting means adjustable toward and from said driving mechanism for accommodating said shaft to the changing vertical LORENZO GIANNELLI.

Witnesses:

FRANK LEVERONI, VICTOR J. GALLENE. 

